A. Suggested Activities
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1. Using Table I and Figures 5,6 and 7 (make copies or transparencies), discuss autosomal, X-linked inheritance and co-dominance.
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2. Practice using the Punnett Square (see Appendix 1 ) with data from Table 1.
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3. Use Vocabulary Review and Concepts and Applying as noted in part I.
B.
Vocabulary Review
Match the words on the left with the descriptions on the right. Each letter may be used once only.
a. autosomal
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1. corresponding forms of a gene
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b. X-linked
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2. two members of a pair of chrom-
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c. phenotype
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osomes
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d. genotype
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3. summarizes family data
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e. homozygous
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4. two alleles are different
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f. heterozygous
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5. both genes expressed in heter-
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g. homologues
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ozygote
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h. locus
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6. trait as expressed
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i. dominant
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7. gene expressed only in homo-
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j. recessive
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zygote
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k. co-dominant
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8. chromosomes other than sex
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1. alleles
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chromosome
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m. pedigree chart
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9. location of a gene
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10. two alleles the same
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11. associated with sex chromosome
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12. genetic make-up
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13. traits or genes fully expressed
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C.
Concepts
Fill in the blanks
1. The blood groups illustrate ___ inheritance.
2. In the pair Tt, the T is a ___ gene.
3. Hemophilia is an X;linked ___ trait.
4. A genotype, TT is ___.
5. Blue eyes express the ___.
6. Tongue-curling illustrates ___ inheritance.
7. “Hairy ears” is a trait linked to the ___ chromosome.
D.
Applying
If a mother is type A and a father type B, can the child be type C? Explain.
ANSWERS:
Vocabulary Review: 1.1 2.g 3.m 4.f 5.k 6.c 7.j 8.a 9.h 10.e 11.b 12.d 13.i
Concepts:
1. co-dominant
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2. dominant
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3. recessive
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4. homozygous
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5. phenotype
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6. autosomal
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Applying:
Yes. Type A can be AO and B can be BO; when crossed type 00 can result.